python-eureka-client in docker container [eureka_client]-[line:1301] -WARNING: pull full registry from eureka server error!

markmjm commented 2 years ago

Hi

I have a flask application that is deployed to a docker container, but i works fine in my desktop build.

Local build When I set up Eureka service (Springboot), Zuul(Springboot) and my app (Flask) on my local desktop, I see no error and I can see the app getting registered in Eureka service.

However, in the docker container, I keep running into this error show at the end. My flas setup is:

eureka_client.init( 'http://eureka1:3001/eureka/', app_name="my_flask_app", instance_port=my_flask_app_port)

inside the docker container, a curl request seems to produce the 'correct' html page, but my_flask_app is not one of this listed in this html page, which tells me that my_flask_app is not getting registed.

curl http://eureka1:3001/

I would appreciate an insight on what might be causing the error below; what additional info I need to provide in the init call?

Thanks you

Error found in Container logs

[2022-03-06 11:37:45]-[eureka_client]-[line:1301] -WARNING: pull full registry from eureka server error!
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/py_eureka_client/eureka_client.py", line 1299, in __pull_full_registry
    self.__connect_to_eureka_server(do_pull)
  File "/usr/local/lib/python3.8/site-packages/py_eureka_client/eureka_client.py", line 1161, in __connect_to_eureka_server
    self.__try_eureka_server_in_cache(fun)
  File "/usr/local/lib/python3.8/site-packages/py_eureka_client/eureka_client.py", line 1092, in __try_eureka_server_in_cache
    fun(url)
  File "/usr/local/lib/python3.8/site-packages/py_eureka_client/eureka_client.py", line 1296, in do_pull
    self.__applications = get_applications(url, self.__remote_regions)
  File "/usr/local/lib/python3.8/site-packages/py_eureka_client/eureka_client.py", line 412, in get_applications
    return _get_applications_(f"{_format_url(eureka_server)}apps/", regions)
  File "/usr/local/lib/python3.8/site-packages/py_eureka_client/eureka_client.py", line 427, in _get_applications_
    txt = http_client.load(_url, timeout=_DEFAULT_TIME_OUT)[0]
  File "/usr/local/lib/python3.8/site-packages/py_eureka_client/http_client.py", line 146, in load
    res = http_cli.urlopen()
  File "/usr/local/lib/python3.8/site-packages/py_eureka_client/http_client.py", line 111, in urlopen
    return urllib.request.urlopen(self.request, data=self.data, timeout=self.timeout,
  File "/usr/local/lib/python3.8/urllib/request.py", line 222, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/local/lib/python3.8/urllib/request.py", line 525, in open
    response = self._open(req, data)
  File "/usr/local/lib/python3.8/urllib/request.py", line 542, in _open
    result = self._call_chain(self.handle_open, protocol, protocol +
  File "/usr/local/lib/python3.8/urllib/request.py", line 502, in _call_chain
    result = func(*args)
  File "/usr/local/lib/python3.8/urllib/request.py", line 1383, in http_open
    return self.do_open(http.client.HTTPConnection, req)
  File "/usr/local/lib/python3.8/urllib/request.py", line 1358, in do_open
    r = h.getresponse()
  File "/usr/local/lib/python3.8/http/client.py", line 1347, in getresponse
    response.begin()
  File "/usr/local/lib/python3.8/http/client.py", line 307, in begin
    version, status, reason = self._read_status()
  File "/usr/local/lib/python3.8/http/client.py", line 276, in _read_status
    raise RemoteDisconnected("Remote end closed connection without"
http.client.RemoteDisconnected: Remote end closed connection without response

keijack commented 2 years ago

Have you even change your hosts file (Mostly located in /etc/hosts) to configure server name eureka1 to your loacal IP? And check in your docker container, whether that is correctly configured.

keijack commented 2 years ago

Close for long time silence, please re-open it if you have any questions.